利用场景：
客户在创立前后端拆散的利用时，前端只用于做一些根本的数据展现，如果波及大量的数据或报表生成，倡议放在服务器端展现，本文次要分享如何在服务器端应用ActiveReportsJS 实现报表导出PDF性能

Demo下载：

https://gcdn.grapecity.com.cn/forum.php?mod=attachment&aid=MTIzMjQwfGMwM2JkNWVhfDE2MjM3MjI5NzF8MjkzODJ8ODgwNzA%3D

环境筹备:
node.js v14.15.0+Headless 无头浏览器

操作步骤：

  1. 增加资源文件
  2. 配置资源和文件
const puppeteer = require('puppeteer');const fs = require('fs');var static = require('node-static');var http = require('http');var file = new(static.Server)(__dirname + '/resources');http.createServer(function (req, res) {  file.serve(req, res);}).listen(9999);const fonts = [    {        name: 'Montserrat',        source: 'Montserrat-Regular.ttf'    },    {        name: 'Montserrat',        source: 'Montserrat-Medium.ttf',        weight: 500    }];

3. 调用浏览器并初始化 调用ARJS 导出PDF文件

(async () => {    const browser = await puppeteer.launch({headless: true});    const page = await browser.newPage();    await page.goto(`http://localhost:9999/host.html`);    //await page.goto(`${__dirname}/resources/host.html`);    const pdfString =await page.evaluate(({reportUrl, fonts}) =>                new Promise(async (resolve, reject) => {            // await GC.ActiveReports.Core.FontStore.registerFonts(fonts);            const report = new GC.ActiveReports.Core.PageReport();            await report.load(reportUrl);            const doc = await report.run();            const result = await GC.ActiveReports.PdfExport.exportDocument(doc, {fonts: fonts, info: {author: 'GrapeCity'}});            const reader = new FileReader();            reader.readAsBinaryString(result.data);            reader.onload = () => resolve(reader.result);            reader.onerror = () => reject('Error occurred while reading binary string');        }), {reportUrl: 'SimpleTable.rdlx-json', fonts: fonts});    const pdfData = Buffer.from(pdfString, 'binary');    fs.writeFileSync(`${__dirname}/out115.pdf`, pdfData);    console.log('done');       process.exit(0);})();